Clive Sinclair is largely famous for a line of groundbreaking and affordable personal computers packing as much as 48K of code crunching RAM. Sinclair also attempted to segue his success in computers into a personal transportation device known as the C5. Sales tanked, as the trike had about as much horsepower as a Timex-Sinclair. The crew over at jetpower.co.uk have remedied this lack of boost by installing a jet engine in place of the anemic 12-volt pedal-electric hybrid powerplant. – Mike Bumbeck